/*************************************************************************
    > File Name: myfile.c
    > Author: ma6174
    > Mail: ma6174@163.com 
    > Created Time: Fri 31 Oct 2025 03:40:35 PM CST
 ************************************************************************/

#include<stdio.h>


int main()
{
	printf("stdin: %d\n",stdin->_fileno);
	printf("stdout: %d\n",stdout->_fileno);
	printf("stderr: %d\n",stderr->_fileno);
	FILE* fp = fopen("log.txt","w");
	printf("fp: %d\n",fp->_fileno);
	return 0;
}



